blt2ski
Kirkland, Wa
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IIRC the aisin trans has a 3.54 first, od is .74 ad dod is .64. The 68rfe is similar to the ally 1000 and Torqueflight with .71 and .61 od/dod and a 3.1 first gear.
If you do free way miles, the 68 rfe is fine. If you go off road, need a bit more startup, you have the equal to a .4-1 lower axel ratio! or around .7-1 if you include the TC multiplier.
More than enough reason for me to go with an Aisin. This is more like the Ally 2400 or 3400 trans gear setups. Many times with higher gcwr and gvwr ratings too.
Marty
92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
2014 Chevy 1500 Dual cab 4x4
92 Red-e-haul 12K equipment trailer
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Bionic Man
USA
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Nothing wrong with the 68. I am very happy with mine. That said, I also would likely opt for the Aisin if I were buying a 2015. Not because I don't like the 68, but because the Aisin is heavier, and my truck is a dedicated tow vehicle.
2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
2002 Gulf Stream Sea Hawk 29FRB with Honda EV6010
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FishOnOne
The Great State of Texas
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45Ricochet wrote:FishOnOne wrote:I recall a while back "I'm Rick James" reported he could not notice any performance difference between the 68 and the Aisin tranny. It's interesting that the defenders of the 68 opted for the Aisin and I think we all know why!
Good luck...
You know it's kind of funny this Ford lover, Ram hater would jump into yet another Ram thread. I seem to remember THIS Ford thread and no Ram guys jumped in with cheap remarks. Usual hear say from Troy I might add.
Just calling a spade... a spade! The above statement I made is undeniable facts but spin it however you like rick.
Perhaps Rick James can chime in as well since he's one of the few straight shooters here that I've read.
'12 Ford Super Duty FX4 ELD CC 6.7 PSD 400HP 800ft/lbs
"250k Miles"
'16 Sprinter 319MKS "Wide Body"
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The Mad Norsky
Yankton, South Dakota
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Joined: 04/14/2003
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catfishmontana wrote:I'll actually be driving through there later this month. Maybe I should just stop and take a gander.
![[emoticon]](https://forums.goodsamclub.com/sharedcontent/cfb/images/scratchead.gif "scratchead") ![[emoticon]](https://forums.goodsamclub.com/sharedcontent/cfb/images/embarrassed.gif "embarrassed")
that sometimes does not work too well. I did the same thing last September, on my way to my son's house in Washington state. So, driving by, just stopped in to Kellogg to see what's going on.
Just looking you know. Drove in with my Ford, drove away with a new Ram.
Mind you, that IS quite the dealership. Only car dealer I've ever seen that has a restaurant inside of it. Sure, small menu, but still a restaurant.
For Rams, they'll load you up in one of their shuttle vans and take you over to the lot SW of the dealership where they keep all the Ram trucks. Shoot, that lot, full of Ram trucks, is a good 1/2 the size or better of most Wal Mart parking lots.
Enjoy your experience there. You never know what you'll be driving when you leave.
Oh and take a good gander at their SlingShot conversion Ram's they have. I'd love to have the grille they have on my Ram.
And I've got the 385/Aisin in mine. 8400 some odd miles now and loving it.
The Mad Norsky, Doll, Logan and Rocky
2014 Ram 3500 w/ Cummins/Aisin
2019 Northern Lite 10-2 EX CD LE Wet Bath
RV'ing since 1991
I took the road less traveled .....Now I'm Lost!
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Cummins12V98
on the road
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FishOnOne wrote:Cummins12V98 wrote:FishOnOne wrote:I recall a while back "I'm Rick James" reported he could not notice any performance difference between the 68 and the Aisin tranny. It's interesting that the defenders of the 68 opted for the Aisin and I think we all know why!
Good luck...
With the Aisin there is for sure a difference it's called the lower starting gears and they really help get the load rolling with ease.
Chryslers Head West Coast Warranty Rep said when he was asked how well the Aisin trans is holding up he said "they don't break".
My 68RFE was flawless towing a combined load of 29K even with the too high 3:42 gears.
Pan with 50K on the AMZ/OIL.
![[image]](http://i.imgur.com/BF5Kgasl.jpg)
I wouldn't put Amzoil in my lawnmower tranny... BTW I hate those small oil pans!
I assume you are joking about the transmission pan being small. If you did not know that is a MagHytec aftermarket Aircraft Aluminum "deep" pan. But I am sure you heard of one of your neighbor having a negative experience with one of those also.
Also I am sure you have heard of negative experiences with AMZ/OIL also.
65K on the rear diff towing a combined 29K. AMZ/OIL Severe Gear.
![[image]](http://i.imgur.com/NqaPQFVl.jpg)
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"
"HeavyWeight" B&W RVK3600
2016 MobileSuites 39TKSB3 highly "Elited" In the stable
2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD
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Sport45
Not far enough from Houston, TX
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Joined: 09/24/2001
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Whoever set those gears up did a good job. Nice contact pattern in both directions.
I wouldn't use it a poster pic for Amsoil though. I've seen plenty of clean diffs with just as many hard miles running store-brand oil. The cleanest are the ones with no limited slip clutches, but the 3.73 LS in my F-250 was pretty nice looking running the O'Reilly's synthetic lube with their friction modifier.
The worst looking diffs are the ones that get water in them because the vent tube gets pulled off for some reason or another...
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IdaD
Idaho
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I've heard good things from others about Dave Smith, but in my experience you can beat their price at other dealerships. By quite a bit. So I'd advise shopping around a little bit rather than just going to Dave Smith, unless they are the only ones who have what you want on their lot. They do have a huge inventory there.
2015 Cummins Ram 4wd CC/SB
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I'm Rick James
Reno, NV, USA
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Joined: 10/18/2004
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FishOnOne wrote:45Ricochet wrote:FishOnOne wrote:I recall a while back "I'm Rick James" reported he could not notice any performance difference between the 68 and the Aisin tranny. It's interesting that the defenders of the 68 opted for the Aisin and I think we all know why!
Good luck...
You know it's kind of funny this Ford lover, Ram hater would jump into yet another Ram thread. I seem to remember THIS Ford thread and no Ram guys jumped in with cheap remarks. Usual hear say from Troy I might add.
Just calling a spade... a spade! The above statement I made is undeniable facts but spin it however you like rick.
Perhaps Rick James can chime in as well since he's one of the few straight shooters here that I've read.
Yes, I've had both the 68RFE and Aisin in a '12 and '14 respectively. Unloaded I cannot tell a difference between the two and when towing my toy hauler the Aisin simply seems to shift faster and firmer than the 68RFE but nothing dramatic. The 5R100 I had in my '08 Ford beats both of the Ram offerings IMO.
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Bedlam
PNW
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Interesting you bring the 5R110 into this discussion. I went from this 5-speed TorqueShift to the 6-speed Aisin. I would say they are almost on par with each other but the Aisin has the advantage of the extra gear ratio. If I had chosen a setup with the 68RFE after owning the TorqueShift, I might have been disappointed. I'm still adjusting to the difference of how power is delivered in my I6 Cummins verses my previous V8 Powerstroke more than the difference in transmission operation.
As I have posted before, the TorqueShift 6R140, Allison 1000 and Aisin AS69RC are all good transmissions with top ratings and you would not go wrong choosing any of these. People that tow less weight or tow less often may not see or need the difference of these top transmissions.
Chevy Sonic 1.8-Honda Passport C70B-Host Mammoth 11.5-Interstate Car Carrier 20-Joyner SandViper 250-Kawasaki Concours ZG1000-Paros 8' flatbed-Pelican Decker DLX 8.75-Ram 5500 HD
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The Mad Norsky
Yankton, South Dakota
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One last thought from me.
As I mentioned before, I have the 385/Aisin Cummins in my 14 Ram. 3:73 rear axle ratio. I have NOT towed my fifth wheel with this rig yet, as I have just been way too busy hauling my truck camper around the country. ![[emoticon]](https://forums.goodsamclub.com/sharedcontent/cfb/images/biggrin.gif "biggrin")
Now there are posters here who claim their Ram never shifts out of sixth gear.
Mine does, and in fact, at certain speeds, it goes gear hunting.
It does this mostly in the low 60 to say about 64 MPH speed range. I've used the plus/minus button on the gear shift to display gears, and I can see it going from sixth to fifth then back and forth. Mostly with a good head wind, and on hills. But it gets to the point where I just lock out sixth gear.
Now I can get it to go away from this by increasing speed to say 67 MPH, which seems to be the sweet spot with this gear ratio (the 3:73).
Tow haul mode does not allow the shift to sixth gear until just about at 60 MPH, so I do see the gear hunting as a result of just not being enough RPM'S or speed into sixth gear to allow it to stay there.
So perhaps the 4:10 may have been a better choice for speeds in the upper 50's to low 60's speed ranges.
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